Needlestick in a Pregnant Nurse: The 72-Hour Window
A 31-year-old registered nurse, 10 weeks pregnant, presents three hours after a hollow-bore needlestick while drawing blood from a 78-year-old nursing home resident with advanced dementia. The wound is a pinpoint on her left index finger; she expressed blood and washed with soap and water at the facility. The source patient's HIV, HBV, and HCV status is unknown; he transferred from another facility three weeks ago and has end-stage renal disease. The employee completed a hepatitis B vaccine series in 2018 but never had a surface antibody titer and does not know whether she responded. Her employer sent her to your clinic and told her 'workers' comp will sort it out later.' She is worried about the baby and asks whether she can wait until she sees her obstetrician on Friday.
1. Walk through the next hour: what do you do now, and what prophylaxis do you start in a pregnant nurse?
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Wound care is already done - she expressed blood and washed. Do not scrub or use caustic agents.
Baseline labs: HIV antigen/antibody, HBsAg/anti-HBs/anti-HBc, HCV antibody with reflex RNA, CBC, creatinine, liver enzymes.
HIV PEP - start now; do not wait for source results. Efficacy falls with time. The target is under 2 hours; the outer limit is 72 hours. Standard 28-day regimen: tenofovir DF/emtricitabine once daily plus dolutegravir 50 mg daily (raltegravir 400 mg BID is an alternative). Dolutegravir is acceptable in pregnancy - the earlier neural-tube signal has largely been dispelled, and prompt effective PEP outweighs it. Do not weaken the regimen because she is pregnant.
Hepatitis B: she completed a series but has no titer. Draw anti-HBs. If it is under 10 mIU/mL or unknown, give HBIG 0.06 mL/kg IM plus a hepatitis B vaccine dose now and complete the series. If anti-HBs is 10 or higher, no HBIG is needed.
HCV: no post-exposure prophylaxis exists - monitor only.
Counsel: nausea is common on PEP; prescribe an antiemetic, review adherence, and tell her not to stop on her own.
2. How do you obtain source testing, and what is the follow-up schedule?
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Source testing. The source is a 78-year-old with advanced dementia who cannot give reliable consent. Most states have occupational-exposure statutes permitting source testing without consent after a significant exposure, with results released to the exposed worker - often HIV status only, sometimes all three. Call the facility's infection control lead or administrator now, document who you spoke with and the time, and put the request in writing. Order HIV antigen/antibody, HBsAg, and HCV antibody per your state's rules. If source testing is refused or delayed, PEP still starts and is reassessed at 72 hours.
Follow-up:
- HIV: repeat antigen/antibody at 6 weeks, 12 weeks, and 6 months (some protocols stop at 4 months with fourth-generation testing).
- HBV: if she is vaccinated today, check anti-HBs 1-2 months after the final dose; if she remains non-immune, HBsAg and anti-HBc at 6 months.
- HCV: HCV RNA at 4-6 weeks and antibody at 4-6 months.
- Pregnancy: coordinate with her obstetrician within the week; the PEP regimen is compatible with pregnancy.
- Adherence: check in at 2 weeks - nausea and fatigue are the main reasons people abandon PEP.
3. Who pays, what does the employer owe her, and what do you say about waiting until Friday?
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OSHA: under the bloodborne pathogens standard (29 CFR 1910.1030), the employer must provide the post-exposure evaluation and follow-up at no cost to the employee, including source evaluation and prophylaxis. A needlestick is a recordable injury on the OSHA 300 log as a privacy-concern case - her name is not entered. It is also a workers' compensation claim, and an authorization delay is the employer's problem, not a reason to delay treatment.
What to tell her about Friday: do not wait. PEP started at 72 hours is substantially less likely to prevent infection than PEP started at 3 hours, and the obstetrician visit on Friday is too late. She does not need her obstetrician's permission to start, and starting does not harm the pregnancy. She should tell her obstetrician within the week so the pregnancy can be co-managed, and she should have a plan for who covers her shifts if she has side effects.
Document: time of exposure, time of presentation, time PEP was started, the source-testing request and response, the counseling given, and her acceptance of treatment. Confirm in writing that the visit is being billed to workers' compensation.